.poster-main{
	position: relative;
	max-width:100%;
}
.poster-main a,.poster-main img{
	display: block;
}
.poster-main .poster-list{	
	max-width:100%;	
}
.poster-main .poster-list .poster-item{
	position: absolute;
	left: 0;
	top: 0;
}
.poster-main .poster-btn{ 
	position:absolute;
	top:0;
	max-width:80%;
	z-index:10; 
	cursor:pointer;  
	opacity:0.8;
}
.poster-main .poster-prev-btn{
	left:-20.7%; 
	top:-5%;
	transition: background 0.5s;
	background: url(../images/an1.png) no-repeat center center;
	background-size: 21%;
}
.poster-main .poster-prev-btn:hover{
	transition: background 0.5s;
	top:-5%;
	background: url(../images/an1_hover.png) no-repeat center center;
	background-size: 21.5%;
}
.poster-main .poster-next-btn{
	right:-15.6%; 
	top:-5%;
	transition: background 0.5s;
	background: url(../images/an2.png) no-repeat center center;
	background-size: 21%;
}
.poster-main .poster-next-btn:hover{
	transition: background 0.5s;
	top:-5%;
	background: url(../images/an2_hover.png) no-repeat center center;
	background-size: 21.5%;
}